BE409049A - - Google Patents
Info
- Publication number
- BE409049A BE409049A BE409049DA BE409049A BE 409049 A BE409049 A BE 409049A BE 409049D A BE409049D A BE 409049DA BE 409049 A BE409049 A BE 409049A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/94—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/58—Arrangements for focusing or reflecting ray or beam
- H01J29/62—Electrostatic lenses
- H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
- H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE458401X | 1934-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE409049A true BE409049A (en:Method) |
Family
ID=6539435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE409049D BE409049A (en:Method) | 1934-04-20 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2123160A (en:Method) |
| BE (1) | BE409049A (en:Method) |
| FR (1) | FR46095E (en:Method) |
| GB (1) | GB458401A (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2771566A (en) * | 1953-01-09 | 1956-11-20 | Itt | Cathode ray electron discharge device |
-
0
- BE BE409049D patent/BE409049A/xx unknown
-
1935
- 1935-04-15 US US16431A patent/US2123160A/en not_active Expired - Lifetime
- 1935-04-18 FR FR46095D patent/FR46095E/fr not_active Expired
- 1935-04-18 GB GB11941/35A patent/GB458401A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2123160A (en) | 1938-07-05 |
| FR46095E (fr) | 1936-02-15 |
| GB458401A (en) | 1936-12-18 |